/*
 * Copyright (C) 2014 hu
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package test.souplang.nodes;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.jdbc.core.JdbcTemplate;

import test.souplang.Context;
import test.souplang.LangNode;
import test.util.JDBCHelper;

/**
 * 
 * @author hu
 */
public class SLSQL extends LangNode {

	public static final Logger LOG = LoggerFactory.getLogger(SLSQL.class);
	public String template = null;
	public String sql = null;
	public String params = null;
	public String[] paramarray = null;

	public void readParams(org.w3c.dom.Element xmlElement) {
		params = xmlElement.getAttribute("params").trim();
		if (params.isEmpty()) {
			params = null;
		} else {
			paramarray = params.split(",");
		}
	}

	public void readSql(org.w3c.dom.Element xmlElement) {
		sql = xmlElement.getAttribute("sql");
		if (sql.isEmpty()) {
			sql = null;
		}
	}

	public void readTemplate(org.w3c.dom.Element xmlElement) {
		template = xmlElement.getAttribute("template");
		if (template.isEmpty()) {
			template = null;
		}
	}

	@Override
	public Object process(Object input, Context context) throws InputTypeErrorException {
		if (input == null) {
			return null;
		}
		if (sql == null || template == null) {
			return null;
		}

		JdbcTemplate jdbcTemplate = JDBCHelper.getJdbcTemplate(template);
		if (jdbcTemplate == null) {
			LOG.info("please create jdbctemplate");
			return null;
		}

		int paramsLength = paramarray.length;
		int updates;
		if (params != null) {
			String[] sqlParams = new String[paramsLength];
			for (int i = 0; i < paramsLength; i++) {
				sqlParams[i] = context.getString(paramarray[i]);
			}
			updates = jdbcTemplate.update(sql, sqlParams);

		} else {
			updates = jdbcTemplate.update(sql);
		}
		LOG.info(sql + params + "    result=" + updates);
		return null;
	}

	@Override
	public boolean validate(Object input) throws Exception {
		return true;
	}

}
